Ingredients
Scale
- For the Brownie Layer:
- 1/2 cup unsalted butter, melted
- 1 cup granulated sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- 1/3 cup unsweetened cocoa powder
- 1/2 cup all-purpose flour
- 1/4 teaspoon salt
- For the Cookie Layer:
- 1/2 cup unsalted butter, softened
- 1/2 cup brown sugar, packed
- 1/4 cup granulated sugar
- 1 large egg
- 1 teaspoon vanilla extract
- 1 1/4 cups all-purpose flour
- 1/2 teaspoon baking soda
- 1/2 cup semi-sweet chocolate chips
- The “Loaded” Fillings:
- 16–20 Oreo cookies
- 1/2 cup chopped walnuts
Instructions
- Step 1: Preparation: Preheat your oven to 350°F (175°C). Line an 8×8-inch square baking pan with parchment paper, leaving an overhang on the sides. This makes it easy to lift the bars out later. Lightly grease the parchment with cooking spray or butter to ensure nothing sticks.
- Step 2: Mix the Brownie Layer: In a medium bowl, whisk together the melted butter and granulated sugar. Add the eggs and vanilla, beating well until the mixture is smooth. Sift in the cocoa powder, flour, and salt. Fold the dry ingredients into the wet ingredients until just combined. Spread this batter evenly into the bottom of your prepared baking pan.
- Step 3: Add the Stuffed Layer: Place a single layer of Oreo cookies directly on top of the raw brownie batter. You should be able to fit a 4×4 grid of cookies. Sprinkle the chopped walnuts into the gaps between the Oreos. Press them down slightly so they nestle into the brownie base.
- Step 4: Mix the Cookie Dough Layer: In a separate bowl, cream together the softened butter, brown sugar, and granulated sugar until fluffy. Beat in the egg and vanilla. Gradually mix in the flour and baking soda. Stir in the chocolate chips. Take small spoonfuls of the cookie dough and flatten them with your hands, then place them over the Oreo and walnut layer until the entire surface is covered.
- Step 5: Baking and Cooling: Place the pan in the center rack of the oven. Bake for 30 to 35 minutes, or until the cookie top is golden brown and a toothpick inserted into the center comes out with just a few moist crumbs. Remove from the oven and let the bars cool completely in the pan for at least one hour before slicing. This wait is crucial for the “fudgy” texture to set properly.
- Cook Time: 55 minutes